Friday, April 24, 2020

Which is a use of air resistance?

• swimming in a pool

• opening a parachute

• falling asleep

• going to the moon

What keeps the planets in orbit around the sun?

• gravity

• friction

• density

• distance

Tags

NGSS.MS-PS2-4

NGSS.MS-ESS1-2

When NASA scientists send a man into outer space in a rocket, what force must the rocket overcome as it leaves the Earth's surface?

• weight

• mass

• gravity

• density

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-2

A boy throws a baseball up in the air. Why does the baseball fall back down to the ground?

• the mass of the baseball decreases, causing it to fall

• the weight of the ball causes the ball to fall

• the force of gravity causes the ball to fall

• the density of the ball causes the ball to fall

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-2

When you drop a hammer and a feather, why does the feather fall slower?

• air resistance causes the feather to slow down

• gravity pulls harder on the hammer than the feather

• gravity pulls harder on the feather than the hammer

• air resistance causes the hammer to fall slower

Tags

NGSS.MS-PS2-2

Look at the picture.  Is the force of gravity on the boy a push or a pull? 

• Pull
• Push

Tags

NGSS.MS-PS2-4

An object with mass has gravity.

• True
• False 

Tags

NGSS.MS-PS2-4

As distance between objects increases the pull of gravity...

• increases 
• decreases 
• Stays the same 

Which of the following never changes no matter where you are in the universe? 

• Pounds 
• weight 
• Force
• Mass

Tags

NGSS.MS-PS1-5

A person would weigh less on the moon than on the Earth because...

• the moon has less mass, and therefore less gravity
• the moon has more mass, and therefore less gravity
• the moon has less mass, and therefore more gravity
• the moon has more mass, and therefor more gravity

Tags

NGSS.MS-PS2-4